aboutsummaryrefslogtreecommitdiff
path: root/advtrains_train_subway/textures/advtrains_subway_wagon_line0.png
blob: c656d9706fb3f3b7a72fde509facfcbc152d225e (plain)
ofshex dumpascii
0000 89 50 4e 47 0d 0a 1a 0a 00 00 00 0d 49 48 44 52 00 00 02 00 00 00 02 00 08 06 00 00 00 f4 78 d4 .PNG........IHDR..............x.
0020 fa 00 00 00 06 62 4b 47 44 00 00 00 00 00 00 f9 43 bb 7f 00 00 00 09 70 48 59 73 00 00 0b 13 00 .....bKGD.......C......pHYs.....
0040 00 0b 13 01 00 9a 9c 18 00 00 00 07 74 49 4d 45 07 e1 0a 17 0b 04 1d 9d 8d 53 3c 00 00 04 55 49 ............tIME.........S<...UI
0060 44 41 54 78 da ed db 41 0a c0 20 0c 04 40 d3 ff ff 39 9e 14 bc f4 54 02 a6 33 20 3d 2b 96 dd 52 DATx...A.....@...9....T..3.=+..R
0080 1d 03 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................................
00a0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................................
00c0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................................
00e0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................................
0100 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................................
0120 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................................
0140 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................................
0160 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................................
0180 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................................
01a0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................................
01c0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................................
01e0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 80 2f 85 25 a0 40 36 dd 8b e9 1d 03 6e f5 58 02 4a 13 .............../.%.@6.....n.X.J.
0200 33 73 3f d7 30 2f 00 05 80 1f 84 ff fe 34 8e 30 2f 00 05 80 ee ba 06 a3 c0 07 14 00 00 40 01 00 3s?.0/.......4.0/............@..
0220 00 14 00 38 74 3d 28 e7 00 20 70 03 3f 2f 29 c9 c4 a6 7b d1 35 40 00 00 00 00 00 00 00 00 00 00 ...8t=(...p.?/)...{.5@..........
0240 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................................
0260 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................................
0280 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................................
02a0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................................
02c0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................................
02e0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................................
0300 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................................
0320 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................................
0340 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................................
0360 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................................
0380 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................................
03a0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................................
03c0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................................
03e0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................................
0400 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................................
0420 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................................
0440 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................................
0460 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................................
0480 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................................
04a0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 5e 4d b2 71 27 f7 9c 07 bf 38 00 00 00 00 ..................^M.q'....8....
04c0 49 45 4e 44 ae 42 60 82 IEND.B`.
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-06 16:08:54 +0000
9' href='#n289'>289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 
/*
Minetest
Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/

#ifndef CONNECTION_HEADER
#define CONNECTION_HEADER

#include "irrlichttypes_bloated.h"
#include "socket.h"
#include "exceptions.h"
#include "constants.h"
#include "util/pointer.h"
#include "util/container.h"
#include "util/thread.h"
#include "util/numeric.h"
#include <iostream>
#include <fstream>
#include <list>
#include <map>

namespace con
{

/*
	Exceptions
*/
class NotFoundException : public BaseException
{
public:
	NotFoundException(const char *s):
		BaseException(s)
	{}
};

class PeerNotFoundException : public BaseException
{
public:
	PeerNotFoundException(const char *s):
		BaseException(s)
	{}
};

class ConnectionException : public BaseException
{
public:
	ConnectionException(const char *s):
		BaseException(s)
	{}
};

class ConnectionBindFailed : public BaseException
{
public:
	ConnectionBindFailed(const char *s):
		BaseException(s)
	{}
};

/*class ThrottlingException : public BaseException
{
public:
	ThrottlingException(const char *s):
		BaseException(s)
	{}
};*/

class InvalidIncomingDataException : public BaseException
{
public:
	InvalidIncomingDataException(const char *s):
		BaseException(s)
	{}
};

class InvalidOutgoingDataException : public BaseException
{
public:
	InvalidOutgoingDataException(const char *s):
		BaseException(s)
	{}
};

class NoIncomingDataException : public BaseException
{
public:
	NoIncomingDataException(const char *s):
		BaseException(s)
	{}
};

class ProcessedSilentlyException : public BaseException
{
public:
	ProcessedSilentlyException(const char *s):
		BaseException(s)
	{}
};

class ProcessedQueued : public BaseException
{
public:
	ProcessedQueued(const char *s):
		BaseException(s)
	{}
};

class IncomingDataCorruption : public BaseException
{
public:
	IncomingDataCorruption(const char *s):
		BaseException(s)
	{}
};

typedef enum MTProtocols {
	PRIMARY,
	UDP,
	MINETEST_RELIABLE_UDP
} MTProtocols;

#define SEQNUM_MAX 65535
inline bool seqnum_higher(u16 totest, u16 base)
{
	if (totest > base)
	{
		if((totest - base) > (SEQNUM_MAX/2))
			return false;
		else
			return true;
	}
	else
	{
		if((base - totest) > (SEQNUM_MAX/2))
			return true;
		else
			return false;
	}
}

inline bool seqnum_in_window(u16 seqnum, u16 next,u16 window_size)
{
	u16 window_start = next;
	u16 window_end   = ( next + window_size ) % (SEQNUM_MAX+1);

	if (window_start < window_end)
	{
		return ((seqnum >= window_start) && (seqnum < window_end));
	}
	else
	{
		return ((seqnum < window_end) || (seqnum >= window_start));
	}
}

struct BufferedPacket
{
	BufferedPacket(u8 *a_data, u32 a_size):
		data(a_data, a_size), time(0.0), totaltime(0.0), absolute_send_time(-1)
	{}
	BufferedPacket(u32 a_size):
		data(a_size), time(0.0), totaltime(0.0), absolute_send_time(-1)
	{}
	SharedBuffer<u8> data; // Data of the packet, including headers
	float time; // Seconds from buffering the packet or re-sending
	float totaltime; // Seconds from buffering the packet
	unsigned int absolute_send_time;
	Address address; // Sender or destination
};

// This adds the base headers to the data and makes a packet out of it
BufferedPacket makePacket(Address &address, u8 *data, u32 datasize,
		u32 protocol_id, u16 sender_peer_id, u8 channel);
BufferedPacket makePacket(Address &address, SharedBuffer<u8> &data,
		u32 protocol_id, u16 sender_peer_id, u8 channel);

// Add the TYPE_ORIGINAL header to the data
SharedBuffer<u8> makeOriginalPacket(
		SharedBuffer<u8> data);

// Split data in chunks and add TYPE_SPLIT headers to them
std::list<SharedBuffer<u8> > makeSplitPacket(
		SharedBuffer<u8> data,
		u32 chunksize_max,
		u16 seqnum);

// Depending on size, make a TYPE_ORIGINAL or TYPE_SPLIT packet
// Increments split_seqnum if a split packet is made
std::list<SharedBuffer<u8> > makeAutoSplitPacket(
		SharedBuffer<u8> data,
		u32 chunksize_max,
		u16 &split_seqnum);

// Add the TYPE_RELIABLE header to the data
SharedBuffer<u8> makeReliablePacket(
		SharedBuffer<u8> data,
		u16 seqnum);

struct IncomingSplitPacket
{
	IncomingSplitPacket()
	{
		time = 0.0;
		reliable = false;
	}
	// Key is chunk number, value is data without headers
	std::map<u16, SharedBuffer<u8> > chunks;
	u32 chunk_count;
	float time; // Seconds from adding
	bool reliable; // If true, isn't deleted on timeout

	bool allReceived()
	{
		return (chunks.size() == chunk_count);
	}
};

/*
=== NOTES ===

A packet is sent through a channel to a peer with a basic header:
TODO: Should we have a receiver_peer_id also?
	Header (7 bytes):
	[0] u32 protocol_id
	[4] u16 sender_peer_id
	[6] u8 channel
sender_peer_id:
	Unique to each peer.
	value 0 (PEER_ID_INEXISTENT) is reserved for making new connections
	value 1 (PEER_ID_SERVER) is reserved for server
	these constants are defined in constants.h
channel:
	The lower the number, the higher the priority is.
	Only channels 0, 1 and 2 exist.
*/
#define BASE_HEADER_SIZE 7
#define CHANNEL_COUNT 3
/*
Packet types:

CONTROL: This is a packet used by the protocol.
- When this is processed, nothing is handed to the user.
	Header (2 byte):
	[0] u8 type
	[1] u8 controltype
controltype and data description:
	CONTROLTYPE_ACK
		[2] u16 seqnum
	CONTROLTYPE_SET_PEER_ID
		[2] u16 peer_id_new
	CONTROLTYPE_PING
	- There is no actual reply, but this can be sent in a reliable
	  packet to get a reply
	CONTROLTYPE_DISCO
*/
#define TYPE_CONTROL 0
#define CONTROLTYPE_ACK 0
#define CONTROLTYPE_SET_PEER_ID 1
#define CONTROLTYPE_PING 2
#define CONTROLTYPE_DISCO 3
#define CONTROLTYPE_ENABLE_BIG_SEND_WINDOW 4

/*
ORIGINAL: This is a plain packet with no control and no error
checking at all.
- When this is processed, it is directly handed to the user.
	Header (1 byte):
	[0] u8 type
*/
#define TYPE_ORIGINAL 1
#define ORIGINAL_HEADER_SIZE 1
/*
SPLIT: These are sequences of packets forming one bigger piece of
data.
- When processed and all the packet_nums 0...packet_count-1 are
  present (this should be buffered), the resulting data shall be
  directly handed to the user.
- If the data fails to come up in a reasonable time, the buffer shall
  be silently discarded.
- These can be sent as-is or atop of a RELIABLE packet stream.